Wireless communication device and method capable of connectionless broadcast

a communication device and wireless technology, applied in the direction of synchronisation arrangement, broadcast service distribution, instruments, etc., can solve the problems of wasting resources, solving drawbacks, and efficiently allocating broadcast messages

Inactive Publication Date: 2004-04-29
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is a waste of a resource to perform the handover every time the PANUs move around, because most PANUs are in an idle state.
However, this solution has a drawback when the broadcast information is divided into several packets for transmission.
There is a problem in efficiently allocating the broadcast message.
The solution of Philips has another drawback in that it takes too much time because each slot packet has to be repeated every sixteen frequency hops.
Accordingly, if there is an error in receiving just one packet, the information contained in a packet is lost and disabled thereby requiring reassembly of the whole broadcast information.
However, according to this solution, the PANU should respond to the received EID packet for the connection setup thereby spending too much time in reaching a state in which a data transmission is feasible.

Method used

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  • Wireless communication device and method capable of connectionless broadcast
  • Wireless communication device and method capable of connectionless broadcast
  • Wireless communication device and method capable of connectionless broadcast

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first embodiment

[0037] FIG. 1 is a diagram schematically showing a wireless communication device according to the present invention.

[0038] The wireless communication device 1 comprises a controller 1, a broadcast data packet generator 20, a synchronization information generator 30 and a transceiver 40. The wireless communication device 1 communicates with an external device 50 using a Bluetooth protocol.

[0039] The synchronization information generator 30 generates synchronization information for channel synchronization, and the broadcast data packet generator 20 generates a broadcast data packet containing broadcast information. The transceiver 40 transmits and receives data to and from the external device 50 by the Bluetooth protocol. The controller 10 broadcasts the synchronization information generated in the synchronization information generator 30 through the transceiver 40, and controls to transmit the broadcast data packet to the external device 50 through the transceiver 40 after the transm...

second embodiment

[0057] FIG. 5 is a diagram showing a wireless communication environment applying a wireless communication method capable of a connectionless broadcast according to the present invention. As shown in FIG. 5, the wireless communication environment comprises a sender 310 and a plurality of receivers 330a.about.330n. With this configuration, the sender 310 is able to broadcast data to the receivers 330a.about.330n using the connectionless broadcast channel, and without taking normal connection setup procedures such as inquiry, inquiry scan, page and page scan.

[0058] FIG. 6 is a diagram showing a hierarchical structure and a time information of the broadcast channel used in the second embodiment of the present invention. As shown in FIG. 6, the connectionless broadcast channel consists of a beacon window, a data window and a connection window. The beacon window is used for synchronization and contains an index with respect to the data window following the beacon window. The data window i...

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Abstract

Disclosed is a wireless communication method capable of a connectionless broadcast. The wireless communication method has the steps of generating a synchronization information for synchronizing with more than one receiver, and a broadcast data packet containing a broadcast data, broadcasting the synchronization information and synchronizing a channel with the receiver, and transmitting the broadcast data packet to the synchronized receiver. Accordingly, without a waste of time in the connection setup procedure, the broadcast data is promptly transmitted to the receiver.

Description

[0001] This application claims the priority of Korean Patent Application No. 2002-63829 filed Oct. 18, 2002 and Korean Patent Application No. 2003-20426 filed Apr. 1, 2003 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.[0002] 1. Field of the Invention[0003] The present invention relates to a wireless communication device and method capable of a connectionless broadcast, and more specifically to a wireless communication device and method capable of a connectionless broadcast in which a broadcast data is transmitted prior to a connection setup procedure in a Bluetooth system.[0004] 2. Description of the Related Art[0005] Bluetooth is a low-priced, low-power and short-range wireless communication technology developed to remove cable connecting devices such as a mobile phone handset, a headset and a portable computer. However, as a standardized wireless communication became feasible among Bluetooth devices, Bluetooth originated a ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L12/28H04M1/72412H04B7/26H04W4/06H04W16/02H04W56/00H04W84/12H04W84/18
CPCH04M1/7253H04W84/18H04M2250/02H04M1/72412
Inventor KIM, YONG-SUKZHEN, BIN
Owner SAMSUNG ELECTRONICS CO LTD
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